George cableton cassaed



@citen gratta atenf -ffirrQ GEORGE oARLE'roN Cassano, 0E BALTIMORE, MAEYEANn Assiettes To niMsELE AND La J. L. cassant), 0E THE SAME PLAGE. i

'Letters PatentNo. 78,925, dated June 16, 1868.4

IMPROVED LARD-GOOLER.

'ro ALL WHOM 1T MAY-concerns;

Be it known that I, GEORGE .CARLETON CASSAED, of the city and county of Baltimore, and State of'Maryland, have invented a'new andiniproved Anti-Granulating Lard-Cooler; and I do hereby declare 4that the following is a full,`elear, and exact description of the construction and operation ofthe saine, reference being had to the accompanying drawings, making a part of this specication, in which- Figure 1 isavertical section through the line y y of lig. 2.

Figure 2 is a horizontal section thrugh the line x .r ot' iig. 1.

Figure is a detached view of one of the Scrapers, with the spring by whiohit is supported.

The object of this invention is to enable lard to be rnpidly'eooled in large quantities, by machinery, in such a manner that itvshall not grannlate, thereby improving its quality. l

In the drawings, A Agrerpriesent the supporting-frame, thetable upon which the-tank rests being designated' by the'letter A, and that part of the frame which projects above said table, to support the sbafting and gearing, being represented by A. A

Bis a wooden tub or tank, the wallsof which incline inwards, as shown in iig. 1, giving the tank the form of a frustum of 'a cone. Within this tank is a vessel, C, of sheet metal or cast iron,.thc walls of which are cylindrical and vertical, its bottom being funnel-shaped, and terminating at' its centre or lower extremity in a discharge-pipe, D, provided with a'cock, E. The side walls of the vessel C project slightly above'the walls of the tank B, in order that any accidental overflow of the tank may not pass into the vessel. The top or most contracted portion of thetank fits closely against the vessel all around it, but below that point vthe walls ofthe tank recede from the vessel, leaving a space, F, between them. The bottom of the vessel C, at its centre, rests upon the bottom of the tank, leaving an extension o the space F all around under the bottom of the enclosed vessel. Pipes, G H, pass through the wall of the tank, and connect with this space, in order to enable the operator to ll it with coldV water, and to regulate at pleasure the temperature and quantity of the water in tbe tank around the vesselA C.

The tank and vessel G being thus constructed andsarranged, I hang a vertical hollow shaft, I, in the centre of the vessel C, attaching it by boxes t' z' to the frame Af, and providing collars t" t" above and below the boxes, to prevent-the shaft from working up or down. This shaft is connected to the lineshaft J by any kind of suitable gearing,tas shown at K l. Near the lower end of the suspended shaft I, two horizontal hollow arms, L L, project from it, nearly to the wall of the vessel C, each arm having a series of openings, a a a, alongits side.

The lower end, I, of the vertical shaft, below the horizontal arms, is made solid. I is a tube inserted into the upper end of the tubular shaft I, through which air may be forced into the shaft, and from the latter through the arms L L and the holes e (t, into the vessel C. Directlyr beneath the arms L L are two strong arms, P P, extending from thev lower end of the vertical shaft, in n direction parallel to the bottom of the vessel C, beneath them, and terminating at'their outer extremities in two upright standards, P P', which rise directly past the ends of the arms L L, and are soldered, brnzed, or cast to those arms at that point. i

The arms L L and P P serve to support a set of upright wooden slats, 'm m. Another set, tt n, are attached to the cross-beam A overhead, and project down into the vessel C, nearly to the hollow arms. As the shaft IV rotates, the slats utf/1t are carried round, passing between the others, 1t n, and thoroughly agitating' the liquid contents of the vessel.

In addition to these several parts, I attach a set of inclined wooden Scrapers, r r, by means of bent springs, s s, to the under side ofthe arms P P, and the outer side of the standards P P, arranging the scraper-s so that,` as the central shaft rotates on its vertical axis, theywill be drawn Aaround upon the bottom `and against the side walls of the vessel, thoroughly scraping the lard from the inner surface of the vessel, and preventing adeposit or accumulation of cold lard upon that surface, while the lard at other points remains warm and liquid. The' n form and arrangement of these springs and s crapers will be readily understood by a glance at the drawings.

lhe apparatus being thus `constructed,'its operation is as follows: The melted lard is introduced into the vessel C, filling the latterfas shown 'by the broken red lines of fig. 1. Atthc same time cold water is admitted at connection, lling the space around the vessel C, asA shown by the broken greenish lines, g.r1. The shaft I is then started and' made to rotate slowly, thoroughly stirring -up the molten mass, rapidly and uniformly cooling the lard, and preventing its adhesion to the walls and bottom of the vessel'. When working very hot lard, as direct from rendering-kettle, sometimes at 250 Fahrenheit, the cooling is assisted by a current of cold air from fan-blower or bellows, forced down the tubular shaft, escaping from the holes a a into the .liquid lard at all parts of the vessel, and rising through the lard, rapidly reducing its temperature to about 80 Fahrenheit, at which point it is withdrawn. Ii' thought advisable, to eccnomize cold water, the air can precede the water-` cooling, or may be worked simultaneously. i

When the lard has been thoroughly cooled in this manner, it is drawnoff through the central dischargespout and valve D E, direct to final package. It will be found perfectly free from granulation, in which c ondtion the oil and stearine will not separate in'warm climates, thereby improving its quality.

Itwill be observed that in no part of the apparatus in the vessel C'is one metallic surface lbrought into contact with another, so that any grinding or galvanic action will take place, whereby either black oilfor corro* sion will ensue, diseoloring or injuring the `lard in any degree. l

It will also be observed that thescrapers, by keeping the walls and bott-cm of the vessel clean, prevent the deposit of a coat of cold lard, which would -otherwise accumulate there, and would seriously interfere with the conduction of the'cold from the water outside to the melted lard within. They'also enable the lard to be more thoroughly drawn off'from the vessel through the pipe D. In a large vessel, in which nearly two tons (three thousand seven hundred pounds) of lard had becnn'coo'led at once, I have found but about nino pounds, or onefourth of one per cent. of the lard adhering to the bottom and walls ot' cooler, after ruiming oi' the lard through discharge-pipe. Y y y Having thus described my invention, what I 'claim asv new, and desire to secure by Letters Patent, is

1. The combination and arrangement of the wooden tank B, having the inclined walls, with the metallic vessel C, having the 'upright walls and funnel-shaped bottom, the central discharge-pipe D, and .the filling and regulating-pipes Gr Il, when said parts are constructed and arranged in the manner and for the purpose set forth.

2. The combination of the vessel C with the vertical tubular shaft I, and the hollow arms I I', having the outlet-holes a a a, substantially as described.. 4

3. The combination of the scrapcrs 1' r, springs s s, and the shaft I, having arms P P, to' support the Scrapers and springs, substantially as described.

4. The combination ofthe shaft I, the fixed slats n n, and the movable slats m m, supported by and rotated with the shaft and its arms, and meshing between the fixed slats, when said parts are'cmployed in connection with the vessel C and tanlr D, havingthe space F between them, as described.

' GEO. oARLEToN oAssARD.

Witnesses:

V. C. ARMSTRONG, EDwD Moena. 

